Factory build sheet
1991 Ford Thunderbird Standard
Build 1FAPP604-M · 3.8L 6cyl · Sedan
VIN positions 1 through 8 read 1FAPP604 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Thunderbird whose VIN starts 1FAPP604 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 40 of them.
- Decoded Jul 7, 2026
- 40 known VINs
This configuration is identical to 1990 Ford Thunderbird Standard 3.8L 6cyl Sedan (41 vehicles). That page carries the full record.
Factory specification
As filed by Ford with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 3.8 L
- Displacement (CI)
- 232
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine manufacturer
- Ford
- Horsepower
- 140 hp
- Fuel type
- Gasoline
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Manufacturer
- FORD MOTOR COMPANY
Weight rating
- GVWR class
- Class 1
- GVWR
- 6,000 lb or less
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The same build, other model years
Ford used the VIN pattern 1FAPP604 for 4 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1FA | FORD MOTOR COMPANY · World manufacturer identifier |
| 4–8 | PP604 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 1991 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
40 vehicles carry this build
Every VIN we have decoded to 1FAPP604-M shares the specification above.
- 40 Known VINs
- 1FAPP604 0MH106350
- 1FAPP604 2MH139477
- 1FAPP604 5MH145614
- 1FAPP604 XMH115542
- 1FAPP604 2MH147045
- 1FAPP604 8MH163735
- 1FAPP604 XMH172162
- 1FAPP604 3MH143148
- 1FAPP604 8MH159491
- 1FAPP604 5MH137948
- 1FAPP604 6MH172787
- 1FAPP604 6MH122973
- 1FAPP604 3MH136801
- 1FAPP604 2MH160958
- 1FAPP604 6MH133021
- 1FAPP604 3MH169331
- 1FAPP604 3MH141996
- 1FAPP604 2MH131105
- 1FAPP604 4MH157169
- 1FAPP604 6MH121550
- 1FAPP604 XMH118747
- 1FAPP604 9MH124376
- 1FAPP604 4MH163747
- 1FAPP604 9MH101731
- 1FAPP604 XMH177149
- 1FAPP604 3MH102647
- 1FAPP604 XMH111314
- 1FAPP604 5MH141997
- 1FAPP604 4MH133230
- 1FAPP604 0MH165107
- 1FAPP604 0MH103576
- 1FAPP604 1MH150129
- 1FAPP604 9MH183332
- 1FAPP604 7MH107026
- 1FAPP604 2MH153928
- 1FAPP604 1MH139342
- 1FAPP604 XMH145558
- 1FAPP604 6MH163474
- 1FAPP604 0MH126498
- 1FAPP604 5MH174272
Neighboring configurations
Other factory configurations of the Thunderbird, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 40 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.